<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">RuoYi-Vue-Plus多租户管理系统</h3>
      <el-form-item prop="tenantId" v-if="tenantEnabled">
        <el-select v-model="loginForm.tenantId" filterable placeholder="请选择/输入公司名称" style="width: 100%">
          <el-option v-for="item in tenantList" :key="item.tenantId" :label="item.companyName" :value="item.tenantId"> </el-option>
          <template #prefix><svg-icon icon-class="company" class="el-input__icon input-icon" /></template>
        </el-select>
      </el-form-item>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off" placeholder="密码" @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button :loading="loading" size="large" type="primary" style="width:100%;" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2023 疯狂的狮子Li All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup lang="ts">
import { getCodeImg, getTenantList } from '@/api/login';
import Cookies from 'js-cookie';
import { encrypt, decrypt } from '@/utils/jsencrypt';
import { useUserStore } from '@/store/modules/user';
import { LoginData, TenantVO } from '@/api/types';
import { FormRules } from 'element-plus';
import { to } from 'await-to-js';

const userStore = useUserStore();
const router = useRouter();

const loginForm = ref<LoginData>({
    tenantId: "000000",
    username: 'admin',
    password: 'admin123',
    rememberMe: false,
    code: '',
    uuid: ''
});

const loginRules: FormRules = {
    tenantId: [{ required: true, trigger: "blur", message: "请输入您的租户编号" }],
    username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
    password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
    code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
};

const codeUrl = ref('');
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 租户开关
const tenantEnabled = ref(true);


// 注册开关
const register = ref(false);
const redirect = ref(undefined);
const loginRef = ref(ElForm);
// 租户列表
const tenantList = ref<TenantVO[]>([]);

const handleLogin = () => {
    loginRef.value.validate(async (valid:boolean, fields: any) => {
        if (valid) {
            loading.value = true;
            // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
            if (loginForm.value.rememberMe) {
                Cookies.set("tenantId", loginForm.value.tenantId, { expires: 30 });
                Cookies.set('username', loginForm.value.username, { expires: 30 });
                Cookies.set('password', String(encrypt(loginForm.value.password)), { expires: 30 });
                Cookies.set('rememberMe', String(loginForm.value.rememberMe), { expires: 30 });
            } else {
                // 否则移除
                Cookies.remove("tenantId");
                Cookies.remove('username');
                Cookies.remove('password');
                Cookies.remove('rememberMe');
            }
            // 调用action的登录方法
            // prittier-ignore
            const [err] = await to(userStore.login(loginForm.value));
            if (!err) {
                await router.push({ path: redirect.value || '/' });
            } else {
                loading.value = false;
                // 重新获取验证码
                if (captchaEnabled.value) {
                    await getCode();
                }
            }
        } else {
            console.log('error submit!', fields);
        }
    });
};

/**
 * 获取验证码
 */
const getCode = async () => {
    const res = await getCodeImg();
    const { data } = res;
    captchaEnabled.value = data.captchaEnabled === undefined ? true : data.captchaEnabled;
    if (captchaEnabled.value) {
        codeUrl.value = 'data:image/gif;base64,' + data.img;
        loginForm.value.uuid = data.uuid;
    }
};

const getCookie = () => {
    const tenantId = Cookies.get("tenantId");
    const username = Cookies.get('username');
    const password = Cookies.get('password');
    const rememberMe = Cookies.get('rememberMe');
    loginForm.value = {
        tenantId: tenantId === undefined ? loginForm.value.tenantId : tenantId,
        username: username === undefined ? loginForm.value.username : username,
        password: password === undefined ? loginForm.value.password : (decrypt(password) as string),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
    };
}


/**
 * 获取租户列表
 */
const initTenantList = async () => {
    const { data } = await getTenantList();
    tenantEnabled.value = data.tenantEnabled === undefined ? true : data.tenantEnabled;
    if (tenantEnabled.value) {
        tenantList.value = data.voList;
        if (tenantList.value != null && tenantList.value.length !== 0) {
            loginForm.value.tenantId = tenantList.value[0].tenantId;
        }
    }
}

onMounted(() => {
    getCode();
    initTenantList();
    getCookie();
});
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial,serif;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
